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Railway Switch

Description: Patent for a railway switch. Illustrations included.
Date: April 4, 1911
Creator: Sydnor, Leslie A.
Partner: UNT Libraries Government Documents Department

Sign.

Description: Patent for an illuminated sign that uses prism to reflect the light thus reducing the amount of lights needed to illuminate the sign.
Date: July 4, 1911
Creator: Hoag, Harry
Partner: UNT Libraries Government Documents Department
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